KIOXIA XFMEXPRESS XT2 tiny 18x14mm removable NVMe SSD complies with XFM DEVICE standard

KIOXIA Corporation, previously known as, Toshiba Memory Corporation, has started sampling of the XFMEXPRESS XT2 removable PCIe/NVMe storage device compliant with XFM DEVICE Ver.1.0-standard with dimensions of just 18×14 mm.

The new storage standard and device are mostly designed for space-constrained applications ranging from ultra-mobile PCs to IoT devices and various embedded applications that may require fast, removable storage.

KIOXIA XFMExpress XT2We do not have the full specifications for the XFMEXPRESS XT2, but here are the highlights:

  • Host interface – PCIe 4.0 x 2 lanes, NVMe 1.4b interface with similar performance to M.2 SSDs
  • Removable storage similar to microSD card
  • Dimensions
    • 18 x 14 x 1.4mm (252 mm2 footprint) compliant with JEDEC XFM DEVICE Ver.1.0 form factor
    • 22.2 x 17.75 x 2.2mm when considering the drive & connector

As I understand, the new storage device is meant to deliver much higher performance than microSD cards, while providing a thinner and smaller form factor than M.2 SSDs. combining the best of both worlds. KIOXIA first announced it in 2019, when it was still called Toshiba, but it took three more years to reach production.

XFMEXPRESS connector

The connector was developed with JAE (Japan Aviation Electronics Industry Ltd), and it works the same way as some SIM card sockets where you need to slide the cover to unlock and open it, before inserting the XFMEXPRESS TF2 module/card, and slide the cover back in to secure it in place. We do have extra specs for the socket itself:

  • Contacts – 39 pos.
  • Contact Resistance – 100mΩ max.
  • Voltage Proof – 500V AC RMS for 1 minute
  • Insulation Resistance – 100MΩ min.
  • Durability – 5,000 cycles
  • Temperature Range –  -25°C to +85°C

The product page has limited information and most details above are from the press release, plus the 2019 announcement. KIOXIA is currently demonstrating the solution at Interop Tokyo 2022 in Makuhari Messe, Japan, until June 17, and will also showcase it at Embedded World 2022 in Germany on June 21-23, and at the Flash Memory Summit 2022 on August 2-4 in the US (Santa Clara).

Thanks to TLS for the tip.

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